Regulating-valve



PATENTED JAN. 12, 1904.

N. E. NASH.

REGULATING VALVE.

APPLICATION FILED JUN 19, 1902.

2 SHEETSSHBET 1.

H0 MODEL.

No. 749,396. PATENTED JAN. 12, 1904.

' N. E. NASH.

REGULATING VALVE.

APPLIUATION FILED JUNE 19, 1902.

K0 MODEL. 7 2 sanmwsnmrr 2.

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UNITED STATES Patented January 12, 1904.

PATENT OFFICE.

. NATHAN E. NASH, OF TORONTO, CANADA, ASSIGNOR TO THE NASH REG-U- LATINGVALVE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION REGULATING-VALVE.

SPECIFICATION forming part of Letters Patent No. 749,396, dated. January12, 1904.

A li ti fil d June 19, 1902. Serial No. 112,356. (No model.)

/ To all whom it may concern:

Be it known that I, NATHAN E. NAsI-I, of the city of Toronto, in thecounty of York and Province of Ontario, Canada, have invented certainnew and useful Improvements in Regulating-Valves; and I hereby declarethat the following is a full, clear, and exact description of the same.

This invention relates to certain new and I useful improvements in thatclass of regulating-valves shown and described in my applications forLetters Patent, filed June 17, 1901, Serial No. 641,949, and July 20',1901, Serial No. 69,149, in which I have shown and described theregulating-valve as consisting of a casting provided with inlet andoutlet channels communicating with a chamber having a valve to controlthe flow of the operating fluid therethrough and an escape-duct torelieve the pressure in the outlet-channel when the flow of theoperating fluid fromthe inlet:

channel has been cut off.

The object of the present invention is to simplify the construction andoperation of the l p 2 5 regulating-valves shown and described in theabove applications, so as to attain a positive and instantaneous actionof the operating parts when the temperature has Varied from the normal.I 3 In carrying out this invention I employ substantially the samesystem ofintercommunicating inlet and outlet channels shown anddescribed in the above applications, and control the flow of theoperating fluid there- .35 through by a valve actuated by the accumuichannel.

To regulate the accumulation of the operating fluid in theaccumulating-chamber of motor, the said chamber is fitted with a smalloutlet-port which in certain circumstances hereinafter described isclosed by a thermostatically-actuated valve and is supplied with theoperating fluid by a diminutive channel in communication with theinlet-channel of the regulating-valve.

For a more complete description of the construction and arrangement ofthe parts and operation of the invention reference should be had to thefollowing specification and the accompanying drawings, in which likeletters of reference refer to like parts.

In the drawings, Figure 1 is an elevation showing a radiator with itssteam valve, an operating-fluid tank connected bya pipe with theradiator-valve, and a regulating-valve in the said pipe to control theflow of the operating fluid to the radiator-valve. Fig. 2 is aperspective view of the regulating-valve, showing its externalappearance. Fig. 3 is a vertical section through the regulating-valve.Fig. 4 is a perspective View, partly in section, of the fluid-controlledvalve and a disk to which it is attached by means of a valve-stem. Fig.5 is a perspective view of the said disk alone. Fig. 6 is a perspectiveview of a plug in which the valve-stem moves. Fig. 7 is a perspectiveview of one of the rotary valves for the inlet-channel. Fig. 8 is anenlarged partlysectional view of the lower end of a thermostatic bladeand its valve, together with the devices whereby the said valve isadjusted with respect to the said blade, as hereinafter described.

In the casing a of the regulatingvalve is an inlet-channelb,l1aving arotary valve 0 to regulate the volume of the operating fluid passingtherethrough. The inlet-channel Z) leads to a valve-chamber (Z, and fromthe said chamber extends the outlet channel 6. Within the chamber d issituated the valve f, opposed to the inner end of the inlet-channel Z)and adapted to register with the valve-seat l1, surrounding the same, tocut off communication between the said channel and the valve-chamber.The valve f is fitted with a valve-stem g, triangular in cross-section,adapted to move longitu- At the inner end of the plug 2' is a valve-seatj, which is opposite the one, A, at the other end of the inletchannel 6.The outer end of the valve-stem g is fitted with a disk Z, having acollar m, which incloses the end of the valve-stem and is provided withgrooves 0, registering with the outer end of the passage h.

Connected to the valve-casing a is the operating-motor p, which embodiesan accumulating-chamber g, formed of a rigid plate having therein asmall outlet-port s, and a flexible diaphragm r in contact with the diskZ. The small outlet-port s is controlled by the thermostatic valve t.Leading from the inletchannel 6 to the accumulating-chamber g is a ductu of diminutive dimensions to allow of the flow of an exceedingly smallvolume of the operating fluid from the inlet-channel to theaccumulating-chamber, and the flow is regulated by means of a rotaryvalve capable of adjustment to further diminish, if necessary, thevolume of the operating fluid passing through the d uct. Thethermostatic valve 25 is adjustably connected, by means of a screw t,(shown only in Fig. 8 and which forms no part of my invention,) to thethermostatic blade w, which extends from the top of the casing a, andbearing against the thermostatic blade w is an adjusting-screw a,carrying a pointer to adjust the moving end of the thermostatic blade wwith reference to the outlet port 5. To effect this adjustment, thecasing for the regulating-valve is provided with a dial, which is notshown, as it forms no part of the present invention, having indicatedthereon the various degrees of temperature say from any degree belowZero to any degree above it. 1n adjusting the thermostatic blade w thepointer is turned to any prede' termined degree on the dial, whichcarries the adjusting screw, to force the thermostatic blade toward orfrom the casing a. The thermostatic valve 25 is then adjusted, by meansof its screw t, independently of the blade to close the outlet-port s,which effects the accumulation of the operating fluid in theaccumulatingchamber g and the distention of the diaphragm r. Thismovement of the diaphragm actuates the valve f and causes it to closethe inner end of the inlet-channel b, and so cut off the flow of theoperating fluid through the valve-chamber (Z to the outlet-channel c,which has the ultimate eflect of allowing the radiator-valve (shown inFig. 1) to open. When the temperature has risen above the normal theexpansion of the thermostatic blade 00 is such that it moves outwardfrom the operating-motor p and carries the thermostatic valve 6 from theoutlet-port s, which allows the operating fluid in theaccumulating-chamber g to escape. The diaphragm is now free to moveoutward, and the pressure of the operating fluid in the inletchannelserves to open the communication between the inlet and outlet channelsthrough the valve-chamber d and hold it open while the temperatureremains above the normal. With the inlet and outlet channels incommunication, as described, the operating fluid causes the closing ofthe radiator steam-valve. (Shown in Fig.1.) When the temperature fallsto or below the normal, the thermostatic blade contracts and moves thevalve 6 to close the outlet-port s. This causes the accumulation of theoperating fluid in the motor to again distend the diaphragm and actuatethe valve f to cut ofi the flow of the operating fluid to theoutlet-channel. When the valve f is in this position, the pressure ofthe operating fluid in the outlet-channel is relieved by the escape ofthe operating fluid through the passage 71, around the triangularvalve-stem and through the channels in the valve-disk Z. When theoperating fluid is passing from the inlet to the outlet-channel, thevalve f bears on the Valveseat j and closes the passage h, therebypreventing the escape of the operating fluid. An escape of the operatingfluid takes place only when the motor-valve is resting on the valveseatto relieve the pressure in the outletchannel.

I claim as my invention In a regulating-valve for the purpose described,a casing having therein a valve-chamher with an inlet and an outletchannel leading therefrom and a passage which is opposite to or inalinement with the inner termination of the inlet-channel, which passageplaces the chamber in communication with the outer air, a valve in thechamber adapted to be moved therein to close either the passage or theinlet-channel, and a stem with a practically triangular cross-section,which extends from the valve and passes through the passage and isprovided with a disk at its end, combinedv with a motor which comprisesan accumulatingchamber in communication with the said inlet-channel,having one rigid wall with an outlet-port therein and a flexiblediaphragmwhich forms the other wall, the said diaphragm being in contactwith the disk of the valve-stem, and a thermostatically-operated valveadapted to control the said outlet-port, substantially as specified.

Toronto, lVIay 17, A. 1). 1902.

NATHAN E. NASH.

In presence of F. B. JARMAN, C. H. RIoHEs.

